辭退子視圖

Question

我在FirstViewController

{ 
SecondViewController *objComing=[[SecondViewController alloc] init]; 
[self.view addSubview:objComing.view]; 

objComing.view.backgroundColor=[UIColor blueColor]; 

objComing.view.frame=CGRectMake(0,420, 320, 0); 
[UIView beginAnimations:nil context:nil]; 
[UIView setAnimationDuration:0.5]; 

[UIView setAnimationCurve:UIViewAnimationCurveEaseIn]; 
objComing.view.frame=CGRectMake(0,0, 320, 420); 

[UIView commitAnimations]; 
} 

有這樣的代碼SecoundViewController包含按鈕，關閉/解僱。如何看待連接到按鈕的IBAction（包含在SecoundViewController中）來解除/移除並隱藏這個覆蓋層？

Answer 1

在關閉/解僱按鈕方法添加以下行以除去secondviewcontroller子視圖：

[self.view removeFromSuperview]; 

Answer 2

[self.view removeFromSuperview];